Could someone give me some advice. I am looking for a wave fin for my Carve 155. I have two free fins that a both over 40 cm. They look way to long and narrow for surf. The long narrow fin looks way too vunerable if I hit the bottom. I've been google searching for fins but not finding much. Parts sources would help too. The surf I sail is usually not shoulder high (and the water is cold - NH).

Thanks. tom

fyi - I am just getting back into windsurfing after a 20+ year break (been surfing though).